body {
  padding: 0;
  margin: 0;
  font-family: "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", tahoma, arial, simsun, "宋体";
  background-color: #f4f6f8;
}
img {
  display: block;
  width: 100%;
}
a {
  display: inline-block;
}
a:hover,
a:focus {
  text-decoration: none;
}
